Seiko Cal. 6643 - 261

This Spring Drive model from 1966 features a 39mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-51e3707e50f7]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1966

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